Primary battery.



E. F. CALLENDEH.

I PRiMARY BAITERY. APPLICATION HLEn' MAY 29. i916.

Patented Feb. 13, 1917.

UNITED STATES PATENT OFFICE. It

EDWIN F. CALLI ENDER, 0F GAIJESBURG, ILLINOIS, AS SIGNQR OF UNE-I'IALFTO L. BIELLE GALLENDER, OF GALESBURG, ILLINOIS.

PRIMARY BATTERY;

To all, uh om it may concern: lie it known that I, EDWIN F. CALLENDER,

a citizen of the United States, and a resident of (ialesburg, in thecounty of Knox and State of lllinois, have invented a new and usefulPrimary .liatte'ry, of which the fol-'-' utility, durabilityainlefficiency of batteries of this type, the improvements beingdirected more particularly toward the construc tion of the receptacle,toward the construction andapplication of the containeecover, and'towardseveral subsidiary improvements presently fully described.

The invention consists,substantially, in

l the improvements hereinafter described. 25

illustrates a preferred embodiment of my in- In "the accompanyingdrawing, which ment is preferably formed of tin, or of sheet-iron platedwith tin whereby aneconolfiical' basic structure is had. The casing-Lshell is entirely covered with asphalt 3,

(preferably by dipping it therein while the latter is hot,) the natureof'which is very adhesive or sticky,when not quite cold. While thasphalt on the shell is yet warm I apply cover or carton 4 of cardboard,

pasteboa d or the like which is either saturated or coated with'paraflin or a similar substance whereby to makeitwaterproof,

the heat and the natureof the asphalt causing the cover to adhere firmlyand closely thereto on both the sides andbottom. In

asmuch as the folding operationcauses portions of the paper onthe bottomtoadmit moisture, I then apply a socket or cup 5 of paper or othersuitable material, preferably waterproofed, and then dip the cupand thelower part of the cover into pa'rafiin 6 ore other similarwaterproofmaterial,

' terial.

-thereof with a fleX'nlewaterproof insula-'- and 8.

Specification, Letters Patent. Pat inte fl F91 13, 191 7,

Application filed May 29, 1916. Serial N0. 100.546.

whereby to etfectu illy exclude moisture from the entire lower portionofthe thus far completed reccpt lClG. v v I The asphalt on th interior ofthe can or casing shell not, f'n' two reasons. suitable as a lining.First. i; is'relatively soft, and would easily'be removed in spots byforc. ing the Zl11( eleineni (presently described) thereinto; andsccmdly, its surface is sticky, or adhesive. In order. therefore, toovercome these ohjertionable features I fill the cavity with hot pitch7, which is then poured out and that left (and constituting the lining)allowed 10 harden; The surface presented by it will be extremely hard.

smooth and glassy. not liable to be injured by placements or-re novelsof the zinc-element. and allowing thesewith the, greatest freedom. a

The receptacle above described'is of great utility. The shell 2 is of anineitpensi e ma- The asphalt 3 coats eyery part tion and is easily anlreadily applied. The cover 4 adheres firmly and closely to the asphaltand will not readily be removed or loosened therefrom by moisture 'orotherwise, and it PTOVlflQL an additional measure damaged by tearingtherefrom or becoming ofsafety in'th'at it is waterproof. The cup orsocket Sand the paraffin ('3 not only effectively exclude moi iturefrom. the lower parts of the receptz cle, and. especially the overlappedportions of, the cover 4, but also provide a smooth bottom on whichthearticle securely rests; whilethe-hardened pitch lining 7 is of reatutility in affording a smooth. glossy, fri itionless surface for thepassage of the zinc element. in protecting the asphalt between it andthe shell 2, and in adding a supplein ental insulation againstelectrolytic action.

The battery may be subjected to rough handling without d: nger of'injurythereto.

Each of the parts oi. the receptacle stifi'ens,

protects and reinfoi ces the others, and the letween the element's2- 8designates the usual zmc element, to

.Which is attached ti 1e negative wire 9. 10.

denotes the carbon surrounded by any suitable depolarizing inaterial 11inclosed in a sack20 held thereon by a cord 12. 13 designates apreferably chemically pure absorbent paper Wrapper around the sack 20and cord 12. These are common in the art.

When the parts 818 inclusive have been placed in the receptacle in theusual manner,

a suflicient quantity of ammonium chlorid or othersuitable salt 19 isplaced thereon-to fill the receptacle to about the point indicated by14, whereupon a vent-tube 15 is placed in position, resting, on andpreferably partly Surrounded by the salt. .Pitch or other suitablesealing material 16 is then used to com' pletely fillflthe'receptacle.Thecap 17 may then, if desired, be removed from the tube 15, Waterpofired thereinto to dissolve the sal ammoniac and chargethebattery,"and

the cap then replaced.

An air space, comprehended by the space which Was occupied by the drysalt, is'thus provided, and in this the gas may collect, Without dangerto the vent or'other part of the battery.

This construction spilling.or -evaporation are prevented and WhiCh.iSnot only as clean as-tlie ordinary dry battery, but whichseflec'tivelyused on vehicles which and a pitch lining is one in and-by are subjectedto shocks and vibration.

While I have wet battery it will be very clear to those skilled in theart that the receptacle hereinabove described is well adapted for a drybattery, and therefore desire that no limitation of my claims beinferredbecause of such specific disclosures.

-Having thus described my invention I claim as new the following,to-witz 1. In a battery, asphalt covering its exterior, a waterproofedcover surrounding said asphalt, and asphalt covering the interior of theshell.

2. In abatter'y, a metalliccasing-shell, asphalt covering its interior,and a pitch lining covering the asphalt.

3 In. a battery, a metallicv casing-shell, asphalt covering its interiorand exterior, for the interior asphalt.

4. In a battery, a metallic casing-shell,

asphalt covering its. interior and exterior, a

pitch lining for the'lnterlor. asphalt, and a parafiined cover for theexterior asphalt.

In testimony whereof I hereunto aflix my signature this 22nd day of May,1916.

, Enwrar. c -LLENDER;

described and illustrated a a metallic casing-shell,

